// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * This comment was taken from the original sony-laptop code
 *
 * ACPI Sony Notebook Control Driver (SNC and SPIC)
 *
 * Copyright (C) 2004-2005 Stelian Pop <stelian@popies.net>
 * Copyright (C) 2007-2009 Mattia Dongili <malattia@linux.it>
 *
 * Parts of this driver inspired from asus_acpi.c and ibm_acpi.c
 * which are copyrighted by their respective authors.
 *
 * The SNY6001 driver part is based on the sonypi driver which includes
 * material from:
 *
 * Copyright (C) 2001-2005 Stelian Pop <stelian@popies.net>
 *
 * Copyright (C) 2005 Narayanan R S <nars@kadamba.org>
 *
 * Copyright (C) 2001-2002 Alcôve <www.alcove.com>
 *
 * Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au>
 *
 * Copyright (C) 2001 Junichi Morita <jun1m@mars.dti.ne.jp>
 *
 * Copyright (C) 2000 Takaya Kinjo <t-kinjo@tc4.so-net.ne.jp>
 *
 * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
 *
 * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
 */


#include <linux/acpi.h>
#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <linux/rfkill.h>
#include <acpi/video.h>
#include <linux/dmi.h>

#include "sonypi-events.h"
#include "sony-nc.h"

/***********************************************************
*                                                          *
*   This module based on sony-laptop from kernel sources   *
*      Sony Notebook Control Driver - SNC (SNY5001)        *
*                                                          *
***********************************************************/




/*
int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
		 "the development of this driver");
		 */
		 

static int kbd_backlight = -1;
module_param(kbd_backlight, int, 0444);
MODULE_PARM_DESC(kbd_backlight,
		 "set this to 0 to disable keyboard backlight, "
		 "1 to enable it with automatic control and 2 to have it always "
		 "on (default: no change from current value)");

static int kbd_backlight_timeout = -1;
module_param(kbd_backlight_timeout, int, 0444);
MODULE_PARM_DESC(kbd_backlight_timeout,
		 "meaningful values vary from 0 to 3 and their meaning depends "
		 "on the model (default: no change from current value)");




/* the device uses 1-based values, while 
the backlight subsystem uses 0-based values */


extern struct platform_device *sony_pf_device;
int  sony_pf_add(void);
void sony_pf_remove(void);

//void sony_laptop_report_input_event( u8 event );

static acpi_handle sony_nc_acpi_handle;
static struct acpi_device* sony_nc_acpi_device = NULL;
static struct sony_nc_handles *handles;


/************************
*    Platform Device    *
************************/
int sony_pf_add( void ){
	int ret = 0;

	ret = platform_driver_register( &sony_pf_driver );
	if (ret) goto out;

	sony_pf_device = platform_device_alloc( KBUILD_MODNAME, -1 );
	if (!sony_pf_device) {
		ret = -ENOMEM;
		goto out_platform_registered;
	}

	ret = platform_device_add(sony_pf_device);
	if (ret) goto out_platform_alloced;

	return 0;

out_platform_alloced:
	platform_device_put(sony_pf_device);
	sony_pf_device = NULL;
out_platform_registered:
	platform_driver_unregister(&sony_pf_driver);
out:
	return ret;
}

void sony_pf_remove(void){
	platform_device_unregister(sony_pf_device);
	platform_driver_unregister(&sony_pf_driver);
}


/*
 * acpi_evaluate_object wrappers
 * all useful calls into SNC methods take one or zero parameters and return
 * integers or arrays.
 */
static union acpi_object *__call_snc_method( acpi_handle handle, char *method, u64 *value ){
	union acpi_object *result = NULL;
	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
	acpi_status status;
	
	if( value ){
		struct acpi_object_list params;
		union acpi_object in;
		in.type = ACPI_TYPE_INTEGER;
		in.integer.value = *value;
		params.count = 1;
		params.pointer = &in;
		status = acpi_evaluate_object(handle, method, &params, &output);
		printk( KERN_NOTICE"[%s] __call_snc_method: [%s:0x%.8x%.8x]\n",
			KBUILD_MODNAME,
			method,
			(unsigned int)(*value >> 32),
			(unsigned int)*value & 0xffffffff
		);
	} else {
		status = acpi_evaluate_object(handle, method, NULL, &output);
		printk( KERN_NOTICE "[%s] __call_snc_method: [%s]\n", KBUILD_MODNAME, method );
	}
	
	if (ACPI_FAILURE(status)) {
		pr_err("Failed to evaluate [%s]\n", method);
		return NULL;
	}
	
	result = (union acpi_object *) output.pointer;
	if( !result ) printk( KERN_NOTICE "[%s] No return object [%s]\n", KBUILD_MODNAME, method );
	
	return result;
}

#define MIN(a, b)	(a > b ? b : a)
static int sony_nc_buffer_call( acpi_handle handle, char *name, u64 *value, void *buffer, size_t buflen ){
	int ret = 0;
	size_t len;
	union acpi_object *object = __call_snc_method(handle, name, value);
	
	if( !object ) return -EINVAL;
	
	if( !buffer ){
		/* do nothing */
	}else if( object->type == ACPI_TYPE_BUFFER ){
		len = MIN(buflen, object->buffer.length);
		memset(buffer, 0, buflen);
		memcpy(buffer, object->buffer.pointer, len);
		
	}else if( object->type == ACPI_TYPE_INTEGER ){
		len = MIN(buflen, sizeof(object->integer.value));
		memset(buffer, 0, buflen);
		memcpy(buffer, &object->integer.value, len);

	} else {
		pr_warn("Unexpected acpi_object: 0x%x\n", object->type);
		ret = -EINVAL;
	}
	
	kfree(object);
	return ret;
}

int sony_nc_int_call(acpi_handle handle, char *name, int *value, int *result ){
	int ret;
	if (value) {
		u64 v = *value;
		ret = sony_nc_buffer_call(handle, name, &v, result, sizeof(*result));
	} else {
		ret =  sony_nc_buffer_call(handle, name, NULL, result, sizeof(*result));
	}
	return ret;
}

static int sony_find_snc_handle(int handle){
	int i;

	/* not initialized yet, return early */
	if (!handles || !handle) return -EINVAL;

	for (i = 0; i < 0x10; i++) {
		if (handles->cap[i] == handle) {
			printk( KERN_NOTICE "[%s] found handle 0x%.4x (offset: 0x%.2x)\n", KBUILD_MODNAME, handle, i );
			return i;
		}
	}
	printk( KERN_WARNING "[%s] handle 0x%.4x not found\n", KBUILD_MODNAME, handle );
	return -EINVAL;
}

static int sony_call_snc_handle(int handle, int argument, int *result){
	int arg, ret = 0;
	int offset = sony_find_snc_handle(handle);

	if (offset < 0) return offset;

	arg = offset | argument;
	ret = sony_nc_int_call(sony_nc_acpi_handle, "SN07", &arg, result);
	printk( KERN_NOTICE "[%s] called SN07 with 0x%.4x (result: 0x%.4x)\n", KBUILD_MODNAME, arg, *result );
	return ret;
}



/*******************************************************
*    sony_nc_values input/output validate functions    *
*******************************************************/

//Sysfs show/store common to all sony_nc_values
static ssize_t sony_nc_sysfs_show(struct device *dev, struct device_attribute *attr, char *buffer){
	int value, ret = 0;
	struct sony_nc_value *item = container_of(attr, struct sony_nc_value, devattr);
	if(!*item->acpiget) return -EIO;
	ret = sony_nc_int_call( sony_nc_acpi_handle, *item->acpiget, NULL, &value );
	if( ret < 0 ) return -EIO;
	if( item->validate ) value = item->validate(SNC_VALIDATE_OUT, value);
	return sysfs_emit( buffer, "%d\n", value );
}

static ssize_t sony_nc_sysfs_store(struct device *dev, struct device_attribute *attr, const char *buffer, size_t count){
	int value;
	int ret = 0;
	struct sony_nc_value *item =  container_of(attr, struct sony_nc_value, devattr);

	if (!item->acpiset)return -EIO;
	if (count > 31)return -EINVAL;
	if (kstrtoint(buffer, 10, &value))return -EINVAL;
	if (item->validate)value = item->validate(SNC_VALIDATE_IN, value);
	if (value < 0)return value;

	ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiset, &value, NULL);
	if (ret < 0) return -EIO;

	item->value = value;
	item->valid = 1;
	return count;
}

/*boolean_validate:
 on input validate boolean values 0/1, on output just pass the
received value.*/
static int boolean_validate(const int direction, const int value){
	if(direction == SNC_VALIDATE_IN) {
		if (value != 0 && value != 1) return -EINVAL;
	}
	return value;
}

/*brightness_default_validate:
manipulate input output values to keep consistency with the
backlight framework for which brightness values are 0-based.*/
static int brightness_default_validate(const int direction, const int value){
	switch (direction) {
		case SNC_VALIDATE_OUT:
			return value - 1;
		case SNC_VALIDATE_IN:
			if (value >= 0 && value < SONY_MAX_BRIGHTNESS) return value + 1;
	}
	return -EINVAL;
}



#define SNC_HANDLE(_name, _getters, _setters, _validate, _debug) \
	{ \
		.name		= __stringify(_name), \
		.acpiget	= _getters, \
		.acpiset	= _setters, \
		.validate	= _validate, \
		.debug		= _debug, \
		.devattr	= __ATTR(_name, 0, sony_nc_sysfs_show, sony_nc_sysfs_store), \
	}

#define SNC_HANDLE_NAMES(_name, _values...) \
	static char *snc_##_name[] = { _values, NULL }


SNC_HANDLE_NAMES(fnkey_get, "GHKE");

SNC_HANDLE_NAMES(brightness_def_get, "GPBR");
SNC_HANDLE_NAMES(brightness_def_set, "SPBR");

SNC_HANDLE_NAMES(cdpower_get, "GCDP");
SNC_HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");

SNC_HANDLE_NAMES(audiopower_get, "GAZP");
SNC_HANDLE_NAMES(audiopower_set, "AZPW");

SNC_HANDLE_NAMES(lanpower_get, "GLNP");
SNC_HANDLE_NAMES(lanpower_set, "LNPW");

SNC_HANDLE_NAMES(lidstate_get, "GLID");

SNC_HANDLE_NAMES(indicatorlamp_get, "GILS");
SNC_HANDLE_NAMES(indicatorlamp_set, "SILS");

SNC_HANDLE_NAMES(gainbass_get, "GMGB");
SNC_HANDLE_NAMES(gainbass_set, "CMGB");

SNC_HANDLE_NAMES(PID_get, "GPID");

SNC_HANDLE_NAMES(CTR_get, "GCTR");
SNC_HANDLE_NAMES(CTR_set, "SCTR");

SNC_HANDLE_NAMES(PCR_get, "GPCR");
SNC_HANDLE_NAMES(PCR_set, "SPCR");

SNC_HANDLE_NAMES(CMI_get, "GCMI");
SNC_HANDLE_NAMES(CMI_set, "SCMI");


static struct sony_nc_value sony_nc_values[] = {
	SNC_HANDLE( brightness_default, snc_brightness_def_get, snc_brightness_def_set, brightness_default_validate, 0 ),
	SNC_HANDLE( fnkey,              snc_fnkey_get,          NULL,                   NULL,                        0 ),
	SNC_HANDLE( cdpower,            snc_cdpower_get,        snc_cdpower_set,        boolean_validate,            0 ),
	SNC_HANDLE( audiopower,         snc_audiopower_get,     snc_audiopower_set,     boolean_validate,            0 ),
	SNC_HANDLE( lanpower,           snc_lanpower_get,       snc_lanpower_set,       boolean_validate,            1 ),
	SNC_HANDLE( lidstate,           snc_lidstate_get,       NULL,                   boolean_validate,            0 ),
	SNC_HANDLE( indicatorlamp,      snc_indicatorlamp_get,  snc_indicatorlamp_set,  boolean_validate,            0 ),
	SNC_HANDLE( gainbass,           snc_gainbass_get,       snc_gainbass_set,       boolean_validate,            0 ),
	/* unknown methods */
	SNC_HANDLE( PID, snc_PID_get, NULL,        NULL, 1 ),
	SNC_HANDLE( CTR, snc_CTR_get, snc_CTR_set, NULL, 1 ),
	SNC_HANDLE( PCR, snc_PCR_get, snc_PCR_set, NULL, 1 ),
	SNC_HANDLE( CMI, snc_CMI_get, snc_CMI_set, NULL, 1 ),
	{ .name = NULL }
};


/*******************************
*           HANDLERS           *
*******************************/


static ssize_t sony_nc_handles_show(struct device *dev, struct device_attribute *attr, char *buffer ){
	ssize_t len = 0;
	int i;
	
	for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
		len += scnprintf(buffer + len, PAGE_SIZE - len, "0x%.4x ", handles->cap[i] );
	}
	len += scnprintf(buffer + len, PAGE_SIZE - len, "\n");
	
	return len;
}

static int sony_nc_handles_setup( struct platform_device *pd ){
	
	int i, r, result, arg;
	
	handles = kzalloc(sizeof(*handles), GFP_KERNEL);
	if ( !handles ) return -ENOMEM;
	
	for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
		arg = i + 0x20;
		r = sony_nc_int_call( sony_nc_acpi_handle, "SN00", &arg, &result );
		if (!r) {
			printk( KERN_NOTICE "[%s] caching handle 0x%.4x (offset: 0x%.2x)\n", KBUILD_MODNAME, result, i );
			handles->cap[i] = result;
		}
	}
	
	
	sysfs_attr_init(&handles->devattr.attr);
	handles->devattr.attr.name = "handles";
	handles->devattr.attr.mode = S_IRUGO;
	handles->devattr.show = sony_nc_handles_show;
	
	/* allow reading capabilities via sysfs */
	if(device_create_file(&pd->dev, &handles->devattr) ){
		kfree(handles);
		handles = NULL;
		return -1;
	}
	
	return 0;
}

static int sony_nc_handles_cleanup(struct platform_device *pd){
	if( handles ){
		device_remove_file(&pd->dev, &handles->devattr);
		kfree( handles );
		handles = NULL;
	}
	return 0;
}






/**************************
*         TOUCHPAD        *
**************************/
struct touchpad_control {
	struct device_attribute attr;
	int    handle;
};

static struct touchpad_control *tp_ctl;

static ssize_t sony_nc_touchpad_show( struct device *dev, struct device_attribute *attr, char *buffer ){
	unsigned int result;
	if( sony_call_snc_handle(tp_ctl->handle, 0x000, &result) )return -EINVAL;
	return sysfs_emit( buffer, "%d\n", !(result & 0x01) );
}

static ssize_t sony_nc_touchpad_store( struct device *dev, struct device_attribute *attr, const char *buffer, size_t count ){
	unsigned int result;
	unsigned long value;
	
	if (count > 31) return -EINVAL;
	
	if (kstrtoul(buffer, 10, &value) || value > 1) return -EINVAL;
	
	/* sysfs: 0 disabled, 1 enabled
	 * EC: 0 enabled, 1 disabled
	 */
	if( sony_call_snc_handle(tp_ctl->handle,(!value << 0x10) | 0x100, &result) ) return -EIO;

	return count;
}

static int sony_nc_touchpad_setup(struct platform_device *pd, unsigned int handle ){
	int ret = 0;

	tp_ctl = kzalloc(sizeof(struct touchpad_control), GFP_KERNEL);
	if (!tp_ctl) return -ENOMEM;

	tp_ctl->handle = handle;

	sysfs_attr_init(&tp_ctl->attr.attr);
	tp_ctl->attr.attr.name = "touchpad";
	tp_ctl->attr.attr.mode = S_IRUGO | S_IWUSR;
	tp_ctl->attr.show = sony_nc_touchpad_show;
	tp_ctl->attr.store = sony_nc_touchpad_store;

	ret = device_create_file(&pd->dev, &tp_ctl->attr);
	if (ret) {
		kfree(tp_ctl);
		tp_ctl = NULL;
	}

	return ret;
}


static void sony_nc_touchpad_cleanup(struct platform_device *pd){
	if (tp_ctl) {
		device_remove_file(&pd->dev, &tp_ctl->attr);
		kfree(tp_ctl);
		tp_ctl = NULL;
	}
}

/**************************
*      BATTERY CARE       *
**************************/

struct battery_care_control {
	struct device_attribute attrs[2];
	unsigned int handle;
};
static struct battery_care_control *bcare_ctl;

static ssize_t sony_nc_battery_care_limit_show(struct device *dev, struct device_attribute *attr, char *buffer ){
	unsigned int result, status;

	if (sony_call_snc_handle(bcare_ctl->handle, 0x0000, &result)) return -EIO;

	status = (result & 0x01) ? ((result & 0x30) >> 0x04) : 0;
	switch (status) {
	case 1:
		status = 80;
		break;
	case 2:
		status = 50;
		break;
	case 3:
		status = 100;
		break;
	default:
		status = 0;
		break;
	}

	return sysfs_emit( buffer, "%d\n", status );
}

static ssize_t sony_nc_battery_care_health_show( struct device *dev, struct device_attribute *attr, char *buffer ){
	unsigned int health;
	
	if( sony_call_snc_handle(bcare_ctl->handle, 0x0200, &health) ) return -EIO;
	return sysfs_emit( buffer, "%d\n", health & 0xff );
}

static ssize_t sony_nc_battery_care_limit_store(struct device *dev, struct device_attribute *attr, const char *buffer, size_t count ){
	
	unsigned int result, cmd;
	unsigned long value;
	if (count > 31) return -EINVAL;
	if (kstrtoul(buffer, 10, &value)) return -EINVAL;
	
	/*  limit values (2 bits):
	 *  00 - none
	 *  01 - 80%
	 *  10 - 50%
	 *  11 - 100%
	 *
	 *  bit 0: 0 disable BCL, 1 enable BCL
	 *  bit 1: 1 tell to store the battery limit (see bits 6,7) too
	 *  bits 2,3: reserved
	 *  bits 4,5: store the limit into the EC
	 *  bits 6,7: store the limit into the battery
	 */
	cmd = 0;
	
	if (value > 0) {
		if      (value <= 50)  cmd = 0x20;
		else if (value <= 80)  cmd = 0x10;
		else if (value <= 100) cmd = 0x30;
		else return -EINVAL;
		
		/*
		 * handle 0x0115 should allow storing on battery too;
		 * handle 0x0136 same as 0x0115 + health status;
		 * handle 0x013f, same as 0x0136 but no storing on the battery
		 */
		if (bcare_ctl->handle != 0x013f) cmd = cmd | (cmd << 2);
		cmd = (cmd | 0x1) << 0x10;
	}
	
	if( sony_call_snc_handle(bcare_ctl->handle, cmd | 0x0100, &result) ) return -EIO;
	
	return count;
}

static int sony_nc_battery_care_setup( struct platform_device *pd,unsigned int handle ){
	int ret = 0;
	
	bcare_ctl = kzalloc(sizeof(struct battery_care_control), GFP_KERNEL);
	if ( !bcare_ctl ) return -ENOMEM;
	
	bcare_ctl->handle = handle;
	
	sysfs_attr_init(&bcare_ctl->attrs[0].attr);
	bcare_ctl->attrs[0].attr.name = "battery_care_limiter";
	bcare_ctl->attrs[0].attr.mode = S_IRUGO | S_IWUSR;
	bcare_ctl->attrs[0].show      = sony_nc_battery_care_limit_show;
	bcare_ctl->attrs[0].store     = sony_nc_battery_care_limit_store;
	
	ret = device_create_file(&pd->dev, &bcare_ctl->attrs[0]);
	if( ret ) goto outkzalloc;
	
	/* 0x0115 is for models with no health reporting capability */
	if( handle == 0x0115 ) return 0;
	
	sysfs_attr_init(&bcare_ctl->attrs[1].attr);
	bcare_ctl->attrs[1].attr.name = "battery_care_health";
	bcare_ctl->attrs[1].attr.mode = S_IRUGO;
	bcare_ctl->attrs[1].show = sony_nc_battery_care_health_show;
	
	ret = device_create_file(&pd->dev, &bcare_ctl->attrs[1]);
	if( ret ) goto outlimiter;
	
	return 0;
	
outlimiter:
	device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
	
outkzalloc:
	kfree( bcare_ctl );
	bcare_ctl = NULL;
	
	return ret;
}

static void sony_nc_battery_care_cleanup(struct platform_device *pd){
	if (bcare_ctl) {
		device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
		if (bcare_ctl->handle != 0x0115)
			device_remove_file(&pd->dev, &bcare_ctl->attrs[1]);

		kfree(bcare_ctl);
		bcare_ctl = NULL;
	}
}


/**************************
*        LID RESUME       *
**************************/


static struct snc_lid_resume_control *lid_ctl;

static ssize_t sony_nc_lid_resume_show( struct device *dev, struct device_attribute *attr, char *buffer ){
	unsigned int pos = LID_RESUME_S5;

	while (pos < LID_RESUME_MAX) {
		if (&lid_ctl->attrs[pos].attr == &attr->attr)
			return sysfs_emit( buffer, "%d\n", (lid_ctl->status >> pos) & 0x01 );
		pos++;
	}
	return -EINVAL;
}

static ssize_t sony_nc_lid_resume_store(struct device *dev, struct device_attribute *attr, const char *buffer, size_t count) {
	unsigned int result;
	unsigned long value;
	unsigned int pos = LID_RESUME_S5;
	if (count > 31) return -EINVAL;

	if (kstrtoul(buffer, 10, &value) || value > 1) return -EINVAL;

	/* the value we have to write to SNC is a bitmask:
	 * +--------------+
	 * | S3 | S4 | S5 |
	 * +--------------+
	 *   2    1    0
	 */
	while (pos < LID_RESUME_MAX) {
		if (&lid_ctl->attrs[pos].attr == &attr->attr) break;
		pos++;
	}
	if (pos == LID_RESUME_MAX) return -EINVAL;

	if (value) value = lid_ctl->status | (1 << pos);
	else value = lid_ctl->status & ~(1 << pos);

	if (sony_call_snc_handle(lid_ctl->handle, value << 0x10 | 0x0100, &result)) return -EIO;
	lid_ctl->status = value;

	return count;
}

static int sony_nc_lid_resume_setup( struct platform_device *pd, unsigned int handle ){
	unsigned int result;
	int i;

	if (sony_call_snc_handle(handle, 0x0000, &result)) return -EIO;

	lid_ctl = kzalloc(sizeof(struct snc_lid_resume_control), GFP_KERNEL);
	if (!lid_ctl) return -ENOMEM;

	lid_ctl->status = result & 0x7;
	lid_ctl->handle = handle;

	sysfs_attr_init(&lid_ctl->attrs[0].attr);
	lid_ctl->attrs[LID_RESUME_S5].attr.name = "lid_resume_S5";
	lid_ctl->attrs[LID_RESUME_S5].attr.mode = S_IRUGO | S_IWUSR;
	lid_ctl->attrs[LID_RESUME_S5].show = sony_nc_lid_resume_show;
	lid_ctl->attrs[LID_RESUME_S5].store = sony_nc_lid_resume_store;

	if (handle == 0x0119) {
		sysfs_attr_init(&lid_ctl->attrs[1].attr);
		lid_ctl->attrs[LID_RESUME_S4].attr.name = "lid_resume_S4";
		lid_ctl->attrs[LID_RESUME_S4].attr.mode = S_IRUGO | S_IWUSR;
		lid_ctl->attrs[LID_RESUME_S4].show = sony_nc_lid_resume_show;
		lid_ctl->attrs[LID_RESUME_S4].store = sony_nc_lid_resume_store;

		sysfs_attr_init(&lid_ctl->attrs[2].attr);
		lid_ctl->attrs[LID_RESUME_S3].attr.name = "lid_resume_S3";
		lid_ctl->attrs[LID_RESUME_S3].attr.mode = S_IRUGO | S_IWUSR;
		lid_ctl->attrs[LID_RESUME_S3].show = sony_nc_lid_resume_show;
		lid_ctl->attrs[LID_RESUME_S3].store = sony_nc_lid_resume_store;
	}
	for (i = 0; i < LID_RESUME_MAX &&
			lid_ctl->attrs[i].attr.name; i++) {
		result = device_create_file(&pd->dev, &lid_ctl->attrs[i]);
		if (result) goto liderror;
	}

	return 0;

liderror:
	for (i--; i >= 0; i--)
		device_remove_file(&pd->dev, &lid_ctl->attrs[i]);

	kfree(lid_ctl);
	lid_ctl = NULL;

	return result;
}


static void sony_nc_lid_resume_cleanup(struct platform_device *pd){
	int i;

	if (lid_ctl) {
		for (i = 0; i < LID_RESUME_MAX; i++) {
			if (!lid_ctl->attrs[i].attr.name)break;
			device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
		}

		kfree(lid_ctl);
		lid_ctl = NULL;
	}
}

/**************************
*         THERMAL         *
**************************/



static struct snc_thermal_ctrl *th_handle;

static int sony_nc_thermal_mode_get(void){
	unsigned int result;
	if (sony_call_snc_handle(0x0122, 0x0100, &result))return -EIO;
	return result & 0xff;
}

static ssize_t sony_nc_thermal_profiles_show(struct device *dev, struct device_attribute *attr, char *buffer){
	short cnt;
	size_t idx = 0;
	
	for (cnt = 0; cnt < THM_PROFILE_MAX; cnt++) {
		if (!cnt || (th_handle->profiles & cnt))
			idx += scnprintf(buffer + idx, PAGE_SIZE - idx, "%s ", snc_thermal_profiles[cnt] );
	}
	idx += scnprintf(buffer + idx, PAGE_SIZE - idx, "\n");
	
	return idx;
}

static int sony_nc_thermal_mode_set(unsigned short mode){
	unsigned int result;

	/* the thermal profile seems to be a two bit bitmask:
	 * lsb -> silent
	 * msb -> performance
	 * no bit set is the normal operation and is always valid
	 * Some vaio models only have "balanced" and "performance"
	 */
	if ((mode && !(th_handle->profiles & mode)) || mode >= THM_PROFILE_MAX) return -EINVAL;

	if (sony_call_snc_handle(0x0122, mode << 0x10 | 0x0200, &result)) return -EIO;

	th_handle->mode = mode;

	return 0;
}

static ssize_t sony_nc_thermal_mode_store(struct device *dev, struct device_attribute *attr, const char *buffer, size_t count ){
	unsigned short cmd;
	size_t len = count;

	if (count == 0) return -EINVAL;
	/* skip the newline if present */
	if (buffer[len - 1] == '\n') len--;

	for (cmd = 0; cmd < THM_PROFILE_MAX; cmd++)
		if (strncmp(buffer, snc_thermal_profiles[cmd], len) == 0)
			break;

	if (sony_nc_thermal_mode_set(cmd))return -EIO;
	return count;
}

static ssize_t sony_nc_thermal_mode_show(struct device *dev, struct device_attribute *attr, char *buffer ){
	int mode = sony_nc_thermal_mode_get();
	if( mode < 0 ) return mode;
	return sysfs_emit( buffer, "%s\n", snc_thermal_profiles[mode] );
}

#ifdef CONFIG_PM_SLEEP
static void sony_nc_thermal_resume(void){
	int status;
	if (!th_handle) return;
	status = sony_nc_thermal_mode_get();
	if (status != th_handle->mode) sony_nc_thermal_mode_set(th_handle->mode);
}
#endif

static int sony_nc_thermal_setup(struct platform_device *pd)
{
	int ret = 0;
	th_handle = kzalloc(sizeof(struct snc_thermal_ctrl), GFP_KERNEL);
	if (!th_handle)	return -ENOMEM;

	ret = sony_call_snc_handle(0x0122, 0x0000, &th_handle->profiles);
	if (ret) {
		pr_warn("couldn't to read the thermal profiles\n");
		goto outkzalloc;
	}

	ret = sony_nc_thermal_mode_get();
	if (ret < 0) {
		pr_warn("couldn't to read the current thermal profile");
		goto outkzalloc;
	}
	th_handle->mode = ret;

	sysfs_attr_init(&th_handle->profiles_attr.attr);
	th_handle->profiles_attr.attr.name = "thermal_profiles";
	th_handle->profiles_attr.attr.mode = S_IRUGO;
	th_handle->profiles_attr.show      = sony_nc_thermal_profiles_show;

	sysfs_attr_init(&th_handle->mode_attr.attr);
	th_handle->mode_attr.attr.name = "thermal_control";
	th_handle->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
	th_handle->mode_attr.show      = sony_nc_thermal_mode_show;
	th_handle->mode_attr.store     = sony_nc_thermal_mode_store;

	ret = device_create_file(&pd->dev, &th_handle->profiles_attr);
	if (ret)goto outkzalloc;

	ret = device_create_file(&pd->dev, &th_handle->mode_attr);
	if (ret)goto outprofiles;

	return 0;

outprofiles:
	device_remove_file(&pd->dev, &th_handle->profiles_attr);
outkzalloc:
	kfree(th_handle);
	th_handle = NULL;
	return ret;
}

static void sony_nc_thermal_cleanup(struct platform_device *pd)
{
	if (th_handle) {
		device_remove_file(&pd->dev, &th_handle->profiles_attr);
		device_remove_file(&pd->dev, &th_handle->mode_attr);
		kfree(th_handle);
		th_handle = NULL;
	}
}

/**************************
*        GFX SWITCH       *
**************************/

enum gfx_switch {
	SPEED,
	STAMINA,
	AUTO
};

struct snc_gfx_switch_control {
	struct device_attribute attr;
	unsigned int handle;
};

static struct snc_gfx_switch_control *gfxs_ctl;

/* returns 0 for speed, 1 for stamina */
static int __sony_nc_gfx_switch_status_get(void){
	unsigned int result;

	if( sony_call_snc_handle(gfxs_ctl->handle,gfxs_ctl->handle == 0x015B ? 0x0000 : 0x0100, &result) ) return -EIO;

	switch (gfxs_ctl->handle) {
		case 0x0146:
			/* 1: discrete GFX (speed)
			 * 0: integrated GFX (stamina)
			 */
			return result & 0x1 ? SPEED : STAMINA;
			break;
		case 0x015B:
			/* 0: discrete GFX (speed)
			 * 1: integrated GFX (stamina)
			 */
			return result & 0x1 ? STAMINA : SPEED;
			break;
		case 0x0128:
			/* it's a more elaborated bitmask, for now:
			 * 2: integrated GFX (stamina)
			 * 0: discrete GFX (speed)
			 */
			printk( KERN_NOTICE "[%s] GFX Status: 0x%x\n", KBUILD_MODNAME, result );
			return result & 0x80 ? AUTO : result & 0x02 ? STAMINA : SPEED;
			break;
	}
	return -EINVAL;
}

static ssize_t sony_nc_gfx_switch_status_show( struct device *dev, struct device_attribute *attr, char *buffer ){
	int pos = __sony_nc_gfx_switch_status_get();
	if (pos < 0) return pos;

	return sysfs_emit(
		buffer,
		"%s\n",
		pos == SPEED ? "speed" : pos == STAMINA ? "stamina" : pos == AUTO ? "auto" : "unknown"
	);
}

static int sony_nc_gfx_switch_setup(struct platform_device *pd, unsigned int handle ){
	unsigned int result;

	gfxs_ctl = kzalloc(sizeof(struct snc_gfx_switch_control), GFP_KERNEL);
	if (!gfxs_ctl) return -ENOMEM;

	gfxs_ctl->handle = handle;
	sysfs_attr_init(&gfxs_ctl->attr.attr);
	gfxs_ctl->attr.attr.name = "gfx_switch_status";
	gfxs_ctl->attr.attr.mode = S_IRUGO;
	gfxs_ctl->attr.show      = sony_nc_gfx_switch_status_show;

	result = device_create_file(&pd->dev, &gfxs_ctl->attr);
	if (result) goto gfxerror;

	return 0;

gfxerror:
	kfree(gfxs_ctl);
	gfxs_ctl = NULL;

	return result;
}

static void sony_nc_gfx_switch_cleanup(struct platform_device *pd){
	if (gfxs_ctl) {
		device_remove_file(&pd->dev, &gfxs_ctl->attr);
		kfree(gfxs_ctl);
		gfxs_ctl = NULL;
	}
}

/**************************
*    HIGHSPEED CHARGING   *
**************************/

static struct device_attribute *hsc_handle;

static ssize_t sony_nc_highspeed_charging_store(struct device *dev, struct device_attribute *attr, const char *buffer, size_t count){
	unsigned int result;
	unsigned long value;

	if (count > 31)return -EINVAL;
	if (kstrtoul(buffer, 10, &value) || value > 1)return -EINVAL;
	if (sony_call_snc_handle(0x0131, value << 0x10 | 0x0200, &result))return -EIO;
	return count;
}

static ssize_t sony_nc_highspeed_charging_show(struct device *dev, struct device_attribute *attr, char *buffer ){
	unsigned int result;
	if (sony_call_snc_handle(0x0131, 0x0100, &result)) return -EIO;
	return sysfs_emit( buffer, "%d\n", result & 0x01 );
}

static int sony_nc_highspeed_charging_setup(struct platform_device *pd){
	unsigned int result;

	if (sony_call_snc_handle(0x0131, 0x0000, &result) || !(result & 0x01)) {
		/* some models advertise the handle but have no implementation
		 * for it
		 */
		pr_info("No High Speed Charging capability found\n");
		return 0;
	}

	hsc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
	if (!hsc_handle) return -ENOMEM;

	sysfs_attr_init(&hsc_handle->attr);
	hsc_handle->attr.name = "battery_highspeed_charging";
	hsc_handle->attr.mode = S_IRUGO | S_IWUSR;
	hsc_handle->show = sony_nc_highspeed_charging_show;
	hsc_handle->store = sony_nc_highspeed_charging_store;

	result = device_create_file(&pd->dev, hsc_handle);
	if (result) {
		kfree(hsc_handle);
		hsc_handle = NULL;
		return result;
	}

	return 0;
}

static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd){
	if (hsc_handle) {
		device_remove_file(&pd->dev, hsc_handle);
		kfree(hsc_handle);
		hsc_handle = NULL;
	}
}

/**************************
*          RFKILL         *
**************************/

static int sony_rfkill_handle;
static struct rfkill *sony_rfkill_devices[N_SONY_RFKILL];
static int sony_rfkill_address[N_SONY_RFKILL] = { 0x300, 0x500, 0x700, 0x900 };

static int sony_nc_rfkill_set( void *data, bool blocked ){
	int result;
	int argument = sony_rfkill_address[(long) data] + 0x100;
	if (!blocked) argument |= 0x070000;
	return sony_call_snc_handle(sony_rfkill_handle, argument, &result);
}

static const struct rfkill_ops sony_rfkill_ops = {
	.set_block = sony_nc_rfkill_set,
};

static int sony_nc_setup_rfkill(struct acpi_device *device, enum sony_nc_rfkill nc_type ){
	int err;
	struct rfkill *rfk;
	enum rfkill_type type;
	const char *name;
	int result;
	bool hwblock, swblock;
	
	switch (nc_type) {
		case SONY_WIFI:
			type = RFKILL_TYPE_WLAN;
			name = "sony-wifi";
			break;
		case SONY_BLUETOOTH:
			type = RFKILL_TYPE_BLUETOOTH;
			name = "sony-bluetooth";
			break;
		case SONY_WWAN:
			type = RFKILL_TYPE_WWAN;
			name = "sony-wwan";
			break;
		case SONY_WIMAX:
			type = RFKILL_TYPE_WIMAX;
			name = "sony-wimax";
			break;
		default:
			return -EINVAL;
	}

	rfk = rfkill_alloc(name, &device->dev, type, &sony_rfkill_ops, (void *)nc_type );
	if (!rfk) return -ENOMEM;

	err = sony_call_snc_handle(sony_rfkill_handle, 0x200, &result);
	if (err < 0) {
		rfkill_destroy(rfk);
		return err;
	}
	hwblock = !(result & 0x1);

	err = sony_call_snc_handle(sony_rfkill_handle, sony_rfkill_address[nc_type], &result );
	if (err < 0) {
		rfkill_destroy(rfk);
		return err;
	}
	swblock = !(result & 0x2);

	rfkill_init_sw_state(rfk, swblock);
	rfkill_set_hw_state(rfk, hwblock);

	err = rfkill_register(rfk);
	if (err) {
		rfkill_destroy(rfk);
		return err;
	}
	sony_rfkill_devices[nc_type] = rfk;
	return err;
}

static void sony_nc_rfkill_update(void){
	enum sony_nc_rfkill i;
	int result;
	bool hwblock;

	sony_call_snc_handle(sony_rfkill_handle, 0x200, &result);
	hwblock = !(result & 0x1);

	for (i = 0; i < N_SONY_RFKILL; i++) {
		int argument = sony_rfkill_address[i];

		if (!sony_rfkill_devices[i]) continue;

		if (hwblock) {
			if (rfkill_set_hw_state(sony_rfkill_devices[i], true)) {
				/* we already know we're blocked */
			}
			continue;
		}

		sony_call_snc_handle(sony_rfkill_handle, argument, &result);
		rfkill_set_states( sony_rfkill_devices[i], !(result & 0x2), false );
	}
}


static int sony_nc_rfkill_setup(struct acpi_device *device, unsigned int handle ){
	u64 offset;
	int i;
	unsigned char buffer[32] = { 0 };

	offset = sony_find_snc_handle(handle);
	sony_rfkill_handle = handle;

	i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer, 32 );
	if (i < 0) return i;

	/* The buffer is filled with magic numbers describing the devices
	 * available, 0xff terminates the enumeration.
	 * Known codes:
	 *	0x00 WLAN
	 *	0x10 BLUETOOTH
	 *	0x20 WWAN GPRS-EDGE
	 *	0x21 WWAN HSDPA
	 *	0x22 WWAN EV-DO
	 *	0x23 WWAN GPS
	 *	0x25 Gobi WWAN no GPS
	 *	0x26 Gobi WWAN + GPS
	 *	0x28 Gobi WWAN no GPS
	 *	0x29 Gobi WWAN + GPS
	 *	0x30 WIMAX
	 *	0x50 Gobi WWAN no GPS
	 *	0x51 Gobi WWAN + GPS
	 *	0x70 no SIM card slot
	 *	0x71 SIM card slot
	 */
	for (i = 0; i < ARRAY_SIZE(buffer); i++) {
		
		if (buffer[i] == 0xff) break;
		printk( KERN_NOTICE "[%s] Radio devices, found 0x%.2x\n", KBUILD_MODNAME, buffer[i] );
		
		if( buffer[i] == 0 && !sony_rfkill_devices[SONY_WIFI] )                                            sony_nc_setup_rfkill(device, SONY_WIFI);
		if( buffer[i] == 0x10 && !sony_rfkill_devices[SONY_BLUETOOTH] )                                    sony_nc_setup_rfkill(device, SONY_BLUETOOTH);
		if( ((0xf0 & buffer[i]) == 0x20 ||(0xf0 & buffer[i]) == 0x50) && !sony_rfkill_devices[SONY_WWAN] ) sony_nc_setup_rfkill(device, SONY_WWAN);
		if( buffer[i] == 0x30 && !sony_rfkill_devices[SONY_WIMAX] )                                        sony_nc_setup_rfkill(device, SONY_WIMAX);
	}
	return 0;
}

static void sony_nc_rfkill_cleanup(void){
	int i;
	for (i = 0; i < N_SONY_RFKILL; i++) {
		if (sony_rfkill_devices[i]) {
			rfkill_unregister(sony_rfkill_devices[i]);
			rfkill_destroy(sony_rfkill_devices[i]);
		}
	}
}


/**************************
*      KBD BACKLIGHT      *
**************************/

struct kbd_backlight {
	unsigned int handle;
	unsigned int base;
	unsigned int mode;
	unsigned int timeout;
	unsigned int has_timeout;
	struct device_attribute mode_attr;
	struct device_attribute timeout_attr;
};

static struct kbd_backlight *kbdbl_ctl;

static ssize_t sony_nc_kbd_backlight_mode_show( struct device *dev, struct device_attribute *attr, char *buffer ){
	return sysfs_emit(buffer, "%d\n", kbdbl_ctl->mode);
}

static ssize_t __sony_nc_kbd_backlight_mode_set(u8 value){
	int result;
	
	if (value > 2)return -EINVAL;
	if (sony_call_snc_handle(kbdbl_ctl->handle, (value << 0x10) | (kbdbl_ctl->base), &result)) return -EIO;
	
	/* Try to turn the light on/off immediately */
	if (value != 1) sony_call_snc_handle(kbdbl_ctl->handle, (value << 0x0f) | (kbdbl_ctl->base + 0x100), &result );
	
	kbdbl_ctl->mode = value;
	return 0;
}

static ssize_t sony_nc_kbd_backlight_mode_store( struct device *dev, struct device_attribute *attr, const char *buffer, size_t count ){
	int ret = 0;
	unsigned long value;
	
	if (count > 31) return -EINVAL;
	if (kstrtoul(buffer, 10, &value)) return -EINVAL;
	ret = __sony_nc_kbd_backlight_mode_set(value);
	if (ret < 0) return ret;
	
	return count;
}


static int __sony_nc_kbd_backlight_timeout_set(u8 value){
	int result;
	if (value > 3)return -EINVAL;
	if (sony_call_snc_handle(kbdbl_ctl->handle, (value << 0x10) | (kbdbl_ctl->base + 0x200), &result)) return -EIO;
	kbdbl_ctl->timeout = value;
	return 0;
}

static ssize_t sony_nc_kbd_backlight_timeout_store( struct device *dev, struct device_attribute *attr, const char *buffer, size_t count ){
	int ret = 0;
	unsigned long value;
	if (count > 31) return -EINVAL;
	if (kstrtoul(buffer, 10, &value))return -EINVAL;
	ret = __sony_nc_kbd_backlight_timeout_set(value);
	if (ret < 0)return ret;
	return count;
}

static ssize_t sony_nc_kbd_backlight_timeout_show( struct device *dev, struct device_attribute *attr, char *buffer ){
	return sysfs_emit( buffer, "%d\n", kbdbl_ctl->timeout );
}

static int sony_nc_kbd_backlight_setup( struct platform_device *pd, unsigned int handle ){
	int result;
	int probe_base = 0;
	int ctl_base = 0;
	int ret = 0;

	if (kbdbl_ctl) {
		pr_warn( "handle 0x%.4x: keyboard backlight setup already done for 0x%.4x\n", handle, kbdbl_ctl->handle );
		return -EBUSY;
	}

	/* verify the kbd backlight presence, some of these handles are not used
	 * for keyboard backlight only
	 */
	switch (handle) {
	case 0x0153:
		probe_base = 0x0;
		ctl_base = 0x0;
		break;
	case 0x0137:
		probe_base = 0x0B00;
		ctl_base = 0x0C00;
		break;
	default:
		probe_base = 0x0100;
		ctl_base = 0x4000;
		break;
	}

	ret = sony_call_snc_handle(handle, probe_base, &result);
	if (ret) return ret;

	if ( (handle == 0x0137 && !(result & 0x02)) || !(result & 0x01) ) {
		printk( KERN_NOTICE "[%s] no backlight keyboard found\n", KBUILD_MODNAME );
		return 0;
	}

	kbdbl_ctl = kzalloc(sizeof(*kbdbl_ctl), GFP_KERNEL);
	if (!kbdbl_ctl) return -ENOMEM;

	kbdbl_ctl->mode = kbd_backlight;
	kbdbl_ctl->timeout = kbd_backlight_timeout;
	kbdbl_ctl->handle = handle;
	kbdbl_ctl->base = ctl_base;
	/* Some models do not allow timeout control */
	kbdbl_ctl->has_timeout = handle != 0x0153;

	sysfs_attr_init(&kbdbl_ctl->mode_attr.attr);
	kbdbl_ctl->mode_attr.attr.name = "kbd_backlight";
	kbdbl_ctl->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
	kbdbl_ctl->mode_attr.show = sony_nc_kbd_backlight_mode_show;
	kbdbl_ctl->mode_attr.store = sony_nc_kbd_backlight_mode_store;

	ret = device_create_file(&pd->dev, &kbdbl_ctl->mode_attr);
	if (ret) goto outkzalloc;

	__sony_nc_kbd_backlight_mode_set(kbdbl_ctl->mode);

	if (kbdbl_ctl->has_timeout) {
		sysfs_attr_init(&kbdbl_ctl->timeout_attr.attr);
		kbdbl_ctl->timeout_attr.attr.name = "kbd_backlight_timeout";
		kbdbl_ctl->timeout_attr.attr.mode = S_IRUGO | S_IWUSR;
		kbdbl_ctl->timeout_attr.show =
			sony_nc_kbd_backlight_timeout_show;
		kbdbl_ctl->timeout_attr.store =
			sony_nc_kbd_backlight_timeout_store;

		ret = device_create_file(&pd->dev, &kbdbl_ctl->timeout_attr);
		if (ret) goto outmode;

		__sony_nc_kbd_backlight_timeout_set(kbdbl_ctl->timeout);
	}

	return 0;

outmode:
	device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
outkzalloc:
	kfree(kbdbl_ctl);
	kbdbl_ctl = NULL;
	return ret;
}

static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd, unsigned int handle ){
	if (kbdbl_ctl && handle == kbdbl_ctl->handle) {
		device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
		if (kbdbl_ctl->has_timeout)
			device_remove_file(&pd->dev, &kbdbl_ctl->timeout_attr);
		kfree(kbdbl_ctl);
		kbdbl_ctl = NULL;
	}
}

/**************************
*         LOWBAT          *
**************************/

static struct device_attribute *lowbatt_handle;

static ssize_t sony_nc_lowbatt_store(struct device *dev, struct device_attribute *attr, const char *buffer, size_t count ){
	unsigned int result;
	unsigned long value;

	if (count > 31) return -EINVAL;
	if (kstrtoul(buffer, 10, &value) || value > 1) return -EINVAL;
	if (sony_call_snc_handle(0x0121, value << 8, &result))return -EIO;

	return count;
}

static ssize_t sony_nc_lowbatt_show( struct device *dev, struct device_attribute *attr, char *buffer ){
	unsigned int result;
	if (sony_call_snc_handle(0x0121, 0x0200, &result))return -EIO;
	return sysfs_emit( buffer, "%d\n", result & 1 );
}

static int sony_nc_lowbatt_setup(struct platform_device *pd){
	unsigned int result;

	lowbatt_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
	if (!lowbatt_handle) return -ENOMEM;

	sysfs_attr_init(&lowbatt_handle->attr);
	lowbatt_handle->attr.name = "lowbatt_hibernate";
	lowbatt_handle->attr.mode = S_IRUGO | S_IWUSR;
	lowbatt_handle->show = sony_nc_lowbatt_show;
	lowbatt_handle->store = sony_nc_lowbatt_store;

	result = device_create_file(&pd->dev, lowbatt_handle);
	if (result) {
		kfree(lowbatt_handle);
		lowbatt_handle = NULL;
		return result;
	}

	return 0;
}

static void sony_nc_lowbatt_cleanup(struct platform_device *pd){
	if (lowbatt_handle) {
		device_remove_file(&pd->dev, lowbatt_handle);
		kfree(lowbatt_handle);
		lowbatt_handle = NULL;
	}
}

/**************************
*        FANSPEED         *
**************************/

static struct device_attribute *fan_handle, *hsf_handle;

static ssize_t sony_nc_hsfan_show( struct device *dev,struct device_attribute *attr, char *buffer ){
	unsigned int result;
	if (sony_call_snc_handle(0x0149, 0x0100, &result))return -EIO;
	return sysfs_emit( buffer, "%d\n", result & 0x01 );
}

static ssize_t sony_nc_fanspeed_show( struct device *dev,struct device_attribute *attr, char *buffer ){
	unsigned int result;
	if (sony_call_snc_handle(0x0149, 0x0300, &result))return -EIO;
	return sysfs_emit( buffer, "%d\n", result & 0xff );
}

static ssize_t sony_nc_hsfan_store( struct device *dev, struct device_attribute *attr, const char *buffer, size_t count ){
	unsigned int result;
	unsigned long value;

	if (count > 31) return -EINVAL;
	if (kstrtoul(buffer, 10, &value) || value > 1) return -EINVAL;
	if (sony_call_snc_handle(0x0149, value << 0x10 | 0x0200, &result)) return -EIO;
	return count;
}

static int sony_nc_fanspeed_setup(struct platform_device *pd){
	unsigned int result;

	fan_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
	if (!fan_handle)return -ENOMEM;

	hsf_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
	if (!hsf_handle) {
		result = -ENOMEM;
		goto out_hsf_handle_alloc;
	}

	sysfs_attr_init(&fan_handle->attr);
	fan_handle->attr.name = "fanspeed";
	fan_handle->attr.mode = S_IRUGO;
	fan_handle->show = sony_nc_fanspeed_show;
	fan_handle->store = NULL;

	sysfs_attr_init(&hsf_handle->attr);
	hsf_handle->attr.name = "fan_forced";
	hsf_handle->attr.mode = S_IRUGO | S_IWUSR;
	hsf_handle->show = sony_nc_hsfan_show;
	hsf_handle->store = sony_nc_hsfan_store;

	result = device_create_file(&pd->dev, fan_handle);
	if (result) goto out_fan_handle;

	result = device_create_file(&pd->dev, hsf_handle);
	if (result) goto out_hsf_handle;

	return 0;

out_hsf_handle:
	device_remove_file(&pd->dev, fan_handle);

out_fan_handle:
	kfree(hsf_handle);
	hsf_handle = NULL;

out_hsf_handle_alloc:
	kfree(fan_handle);
	fan_handle = NULL;
	return result;
}

static void sony_nc_fanspeed_cleanup(struct platform_device *pd){
	if (fan_handle) {
		device_remove_file(&pd->dev, fan_handle);
		kfree(fan_handle);
		fan_handle = NULL;
	}
	if (hsf_handle) {
		device_remove_file(&pd->dev, hsf_handle);
		kfree(hsf_handle);
		hsf_handle = NULL;
	}
}


/**************************
*        USB CHARGE       *
**************************/

static struct device_attribute *uc_handle;

static ssize_t sony_nc_usb_charge_store( struct device *dev, struct device_attribute *attr, const char *buffer, size_t count ){
	unsigned int result;
	unsigned long value;

	if (count > 31) return -EINVAL;
	if (kstrtoul(buffer, 10, &value) || value > 1) return -EINVAL;
	if (sony_call_snc_handle(0x0155, value << 0x10 | 0x0100, &result)) return -EIO;
	return count;
}

static ssize_t sony_nc_usb_charge_show(struct device *dev, struct device_attribute *attr, char *buffer){
	unsigned int result;
	if (sony_call_snc_handle(0x0155, 0x0000, &result))return -EIO;
	return sysfs_emit( buffer, "%d\n", result & 0x01 );
}

static int sony_nc_usb_charge_setup(struct platform_device *pd){
	unsigned int result;

	if (sony_call_snc_handle(0x0155, 0x0000, &result) || !(result & 0x01)) {
		/* some models advertise the handle but have no implementation
		 * for it
		 */
		pr_info("No USB Charge capability found\n");
		return 0;
	}

	uc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
	if (!uc_handle) return -ENOMEM;

	sysfs_attr_init(&uc_handle->attr);
	uc_handle->attr.name = "usb_charge";
	uc_handle->attr.mode = S_IRUGO | S_IWUSR;
	uc_handle->show = sony_nc_usb_charge_show;
	uc_handle->store = sony_nc_usb_charge_store;

	result = device_create_file(&pd->dev, uc_handle);
	if (result) {
		kfree(uc_handle);
		uc_handle = NULL;
		return result;
	}

	return 0;
}

static void sony_nc_usb_charge_cleanup(struct platform_device *pd){
	if (uc_handle) {
		device_remove_file(&pd->dev, uc_handle);
		kfree(uc_handle);
		uc_handle = NULL;
	}
}

/**************************
*        PANEL ID         *
**************************/

static struct device_attribute *panel_handle;

static ssize_t sony_nc_panelid_show(struct device *dev, struct device_attribute *attr, char *buffer){
	unsigned int result;
	if (sony_call_snc_handle(0x011D, 0x0000, &result)) return -EIO;
	return sysfs_emit( buffer, "%d\n", result );
}

static int sony_nc_panelid_setup(struct platform_device *pd){
	unsigned int result;

	panel_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
	if (!panel_handle)return -ENOMEM;

	sysfs_attr_init(&panel_handle->attr);
	panel_handle->attr.name = "panel_id";
	panel_handle->attr.mode = S_IRUGO;
	panel_handle->show = sony_nc_panelid_show;
	panel_handle->store = NULL;

	result = device_create_file(&pd->dev, panel_handle);
	if (result) {
		kfree(panel_handle);
		panel_handle = NULL;
		return result;
	}

	return 0;
}

static void sony_nc_panelid_cleanup(struct platform_device *pd){
	if (panel_handle) {
		device_remove_file(&pd->dev, panel_handle);
		kfree(panel_handle);
		panel_handle = NULL;
	}
}

/**************************
*      SMART CONNECT      *
**************************/

static struct device_attribute *sc_handle;

static ssize_t sony_nc_smart_conn_store(struct device *dev, struct device_attribute *attr, const char *buffer, size_t count ){
	unsigned int result;
	unsigned long value;
	if (count > 31)return -EINVAL;
	if (kstrtoul(buffer, 10, &value) || value > 1)return -EINVAL;
	if (sony_call_snc_handle(0x0168, value << 0x10, &result))return -EIO;
	return count;
}

static int sony_nc_smart_conn_setup(struct platform_device *pd){
	unsigned int result;

	sc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
	if (!sc_handle)return -ENOMEM;

	sysfs_attr_init(&sc_handle->attr);
	sc_handle->attr.name = "smart_connect";
	sc_handle->attr.mode = S_IWUSR;
	sc_handle->show = NULL;
	sc_handle->store = sony_nc_smart_conn_store;

	result = device_create_file(&pd->dev, sc_handle);
	if (result) {
		kfree(sc_handle);
		sc_handle = NULL;
		return result;
	}

	return 0;
}

static void sony_nc_smart_conn_cleanup(struct platform_device *pd){
	if (sc_handle) {
		device_remove_file(&pd->dev, sc_handle);
		kfree(sc_handle);
		sc_handle = NULL;
	}
}


/**************************
*    BACKLIGHT DEVICE     *
**************************/

struct sony_backlight_props {
	struct backlight_device *dev;
	int			handle;
	int			cmd_base;
	u8			offset;
	u8			maxlvl;
};
static struct sony_backlight_props sony_bl_props;

static int sony_backlight_update_status(struct backlight_device *bd){
	int arg = bd->props.brightness + 1;
	return sony_nc_int_call(sony_nc_acpi_handle, "SBRT", &arg, NULL);
}

static int sony_backlight_get_brightness(struct backlight_device *bd){
	int value;
	if (sony_nc_int_call(sony_nc_acpi_handle, "GBRT", NULL, &value))return 0;
	/* brightness levels are 1-based, while backlight ones are 0-based */
	return value - 1;
}

static int sony_nc_get_brightness_ng(struct backlight_device *bd){
	int result;
	struct sony_backlight_props *sdev =	(struct sony_backlight_props *)bl_get_data(bd);
	sony_call_snc_handle(sdev->handle, sdev->cmd_base + 0x100, &result);
	return (result & 0xff) - sdev->offset;
}

static int sony_nc_update_status_ng(struct backlight_device *bd){
	int value, result;
	struct sony_backlight_props *sdev =	(struct sony_backlight_props *)bl_get_data(bd);
	value = bd->props.brightness + sdev->offset;
	if (sony_call_snc_handle(sdev->handle, sdev->cmd_base | (value << 0x10),&result))return -EIO;
	return value;
}

static const struct backlight_ops sony_backlight_ops = {
	.options = BL_CORE_SUSPENDRESUME,
	.update_status = sony_backlight_update_status,
	.get_brightness = sony_backlight_get_brightness,
};
static const struct backlight_ops sony_backlight_ng_ops = {
	.options = BL_CORE_SUSPENDRESUME,
	.update_status = sony_nc_update_status_ng,
	.get_brightness = sony_nc_get_brightness_ng,
};


/**************************
*       BACKLIGHT         *
**************************/

static void sony_nc_backlight_ng_read_limits(int handle, struct sony_backlight_props *props){
	u64 offset;
	int i;
	int lvl_table_len = 0;
	u8 min = 0xff, max = 0x00;
	unsigned char buffer[32] = { 0 };

	props->handle = handle;
	props->offset = 0;
	props->maxlvl = 0xff;

	offset = sony_find_snc_handle(handle);

	/* try to read the boundaries from ACPI tables, if we fail the above
	 * defaults should be reasonable
	 */
	i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer, 32 );
	if (i < 0) return;

	switch (handle) {
	case 0x012f:
	case 0x0137:
		lvl_table_len = 9;
		break;
	case 0x143:
	case 0x14b:
	case 0x14c:
		lvl_table_len = 16;
		break;
	}

	/* the buffer lists brightness levels available, brightness levels are
	 * from position 0 to 8 in the array, other values are used by ALS
	 * control.
	 */
	for (i = 0; i < lvl_table_len && i < ARRAY_SIZE(buffer); i++) {
		printk( KERN_NOTICE "[%s] Brightness level: %d\n", KBUILD_MODNAME, buffer[i] );
		if (!buffer[i])	break;
		if (buffer[i] > max)max = buffer[i];
		if (buffer[i] < min)min = buffer[i];
	}
	props->offset = min;
	props->maxlvl = max;
	printk( KERN_NOTICE "[%s] Brightness levels: min=%d max=%d\n", KBUILD_MODNAME, props->offset, props->maxlvl );
}

static void sony_nc_backlight_setup(void){
	int max_brightness = 0;
	const struct backlight_ops *ops = NULL;
	struct backlight_properties props;

	if (sony_find_snc_handle(0x12f) >= 0) {
		ops = &sony_backlight_ng_ops;
		sony_bl_props.cmd_base = 0x0100;
		sony_nc_backlight_ng_read_limits(0x12f, &sony_bl_props);
		max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;

	} else if (sony_find_snc_handle(0x137) >= 0) {
		ops = &sony_backlight_ng_ops;
		sony_bl_props.cmd_base = 0x0100;
		sony_nc_backlight_ng_read_limits(0x137, &sony_bl_props);
		max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;

	} else if (sony_find_snc_handle(0x143) >= 0) {
		ops = &sony_backlight_ng_ops;
		sony_bl_props.cmd_base = 0x3000;
		sony_nc_backlight_ng_read_limits(0x143, &sony_bl_props);
		max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;

	} else if (sony_find_snc_handle(0x14b) >= 0) {
		ops = &sony_backlight_ng_ops;
		sony_bl_props.cmd_base = 0x3000;
		sony_nc_backlight_ng_read_limits(0x14b, &sony_bl_props);
		max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;

	} else if (sony_find_snc_handle(0x14c) >= 0) {
		ops = &sony_backlight_ng_ops;
		sony_bl_props.cmd_base = 0x3000;
		sony_nc_backlight_ng_read_limits(0x14c, &sony_bl_props);
		max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;

	} else if (acpi_has_method(sony_nc_acpi_handle, "GBRT")) {
		ops = &sony_backlight_ops;
		max_brightness = SONY_MAX_BRIGHTNESS - 1;

	} else
		return;

	memset(&props, 0, sizeof(struct backlight_properties));
	props.type = BACKLIGHT_PLATFORM;
	props.max_brightness = max_brightness;
	sony_bl_props.dev = backlight_device_register("sony", NULL,
						      &sony_bl_props,
						      ops, &props);

	if (IS_ERR(sony_bl_props.dev)) {
		pr_warn("unable to register backlight device\n");
		sony_bl_props.dev = NULL;
	} else
		sony_bl_props.dev->props.brightness = ops->get_brightness(sony_bl_props.dev);
}

static void sony_nc_backlight_cleanup(void){
	backlight_device_unregister(sony_bl_props.dev);
}


/***************************
*     FUNCTIONS SETUP      *
***************************/


static void sony_nc_function_setup( struct acpi_device *device, struct platform_device *pf_device ){
	
	unsigned int i, result, bitmask, arg;
	
	if( !handles ) return;
	
	/* setup found handles here */
	for( i = 0; i < ARRAY_SIZE(handles->cap); i++ ){
		
		unsigned int handle = handles->cap[i];
		
		if( !handle ) continue;
		
		printk( KERN_NOTICE "[%s] setting up handle 0x%.4x\n", KBUILD_MODNAME, handle );
		
		switch( handle ){
			case 0x0100:
			case 0x0101:
			case 0x0127:
				/* setup hotkeys */
				sony_call_snc_handle( handle, 0, &result );
				break;
			case 0x0102:
				/* setup hotkeys */
				sony_call_snc_handle( handle, 0x100, &result );
				break;
			case 0x0105:
			case 0x0148:
				/* touchpad enable/disable */
				result = sony_nc_touchpad_setup( pf_device, handle );
				if( result ) pr_err( "couldn't set up touchpad control function (%d)\n", result );
				break;
			case 0x0115:
			case 0x0136:
			case 0x013f:
				result = sony_nc_battery_care_setup( pf_device, handle );
				if( result ) pr_err( "couldn't set up battery care function (%d)\n", result );
				break;
			case 0x0119:
			case 0x015D:
				result = sony_nc_lid_resume_setup( pf_device, handle );
				if (result)
					pr_err( "couldn't set up lid resume function (%d)\n", result );
				break;
			case 0x0122:
				result = sony_nc_thermal_setup(pf_device);
				if (result)
					pr_err( "couldn't set up thermal profile function (%d)\n", result );
				break;
			case 0x0128:
			case 0x0146:
			case 0x015B:
				result = sony_nc_gfx_switch_setup(pf_device, handle);
				if (result)
					pr_err( "couldn't set up GFX Switch status (%d)\n",result );
				break;
			case 0x0131:
				result = sony_nc_highspeed_charging_setup(pf_device);
				if (result)
					pr_err( "couldn't set up high speed charging function (%d)\n", result );
				break;
			case 0x0124:
			case 0x0135:
				result = sony_nc_rfkill_setup(device, handle);
				if (result)
					pr_err( "couldn't set up rfkill support (%d)\n",	result );
				break;
			case 0x0137:
			case 0x0143:
			case 0x014b:
			case 0x014c:
			case 0x0153:
			case 0x0163:
				result = sony_nc_kbd_backlight_setup(pf_device, handle);
				if (result)
					pr_err( "couldn't set up keyboard backlight function (%d)\n", result );
				break;
			case 0x0121:
				result = sony_nc_lowbatt_setup(pf_device);
				if (result)
					pr_err( "couldn't set up low battery function (%d)\n",  result );
				break;
			case 0x0149:
				result = sony_nc_fanspeed_setup(pf_device);
				if (result)
					pr_err( "couldn't set up fan speed function (%d)\n", result );
				break;
			case 0x0155:
				result = sony_nc_usb_charge_setup(pf_device);
				if (result)
					pr_err( "couldn't set up USB charge support (%d)\n", result );
				break;
			case 0x011D:
				result = sony_nc_panelid_setup(pf_device);
				if (result)
					pr_err( "couldn't set up panel ID function (%d)\n", result );
				break;
			case 0x0168:
				result = sony_nc_smart_conn_setup(pf_device);
				if (result)
					pr_err( "couldn't set up smart connect support (%d)\n", result );
				break;
			default:
				continue;
		}
	}
	
	/* Enable all events */
	arg = 0x10;
	if( !sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask) )
		sony_nc_int_call( sony_nc_acpi_handle, "SN02", &bitmask, &result );
}


static void sony_nc_function_cleanup(struct platform_device *pd)
{
	unsigned int i, result, bitmask, handle;

	if (!handles)
		return;

	/* get enabled events and disable them */
	sony_nc_int_call(sony_nc_acpi_handle, "SN01", NULL, &bitmask);
	sony_nc_int_call(sony_nc_acpi_handle, "SN03", &bitmask, &result);

	/* cleanup handles here */
	for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {

		handle = handles->cap[i];

		if (!handle)
			continue;

		switch (handle) {
		case 0x0105:
		case 0x0148:
			sony_nc_touchpad_cleanup(pd);
			break;
		case 0x0115:
		case 0x0136:
		case 0x013f:
			sony_nc_battery_care_cleanup(pd);
			break;
		case 0x0119:
		case 0x015D:
			sony_nc_lid_resume_cleanup(pd);
			break;
		case 0x0122:
			sony_nc_thermal_cleanup(pd);
			break;
		case 0x0128:
		case 0x0146:
		case 0x015B:
			sony_nc_gfx_switch_cleanup(pd);
			break;
		case 0x0131:
			sony_nc_highspeed_charging_cleanup(pd);
			break;
		case 0x0124:
		case 0x0135:
			sony_nc_rfkill_cleanup();
			break;
		case 0x0137:
		case 0x0143:
		case 0x014b:
		case 0x014c:
		case 0x0153:
		case 0x0163:
			sony_nc_kbd_backlight_cleanup(pd, handle);
			break;
		case 0x0121:
			sony_nc_lowbatt_cleanup(pd);
			break;
		case 0x0149:
			sony_nc_fanspeed_cleanup(pd);
			break;
		case 0x0155:
			sony_nc_usb_charge_cleanup(pd);
			break;
		case 0x011D:
			sony_nc_panelid_cleanup(pd);
			break;
		case 0x0168:
			sony_nc_smart_conn_cleanup(pd);
			break;
		default:
			continue;
		}
	}

	/* finally cleanup the handles list */
	sony_nc_handles_cleanup(pd);
}


/***********************
*    NC DEVICE INIT    *
***********************/


static acpi_status sony_walk_callback( acpi_handle handle, u32 level, void *context, void **return_value ){
	
	struct acpi_device_info *info;
	
	if( ACPI_SUCCESS( acpi_get_object_info(handle, &info) ) ){
		pr_warn( "[%s] Found method: %4.4s, args %X\n", KBUILD_MODNAME, (char *)&info->name, info->param_count );
		
		kfree( info );
	}
	
	return AE_OK;
}

static int sony_nc_add( struct acpi_device* device ){
	acpi_status status;
	int result = 0;
	struct sony_nc_value *item;
	
	printk( KERN_NOTICE "[%s] SNC setup...\n", KBUILD_MODNAME );
	
	sony_nc_acpi_device = device;
	strcpy( acpi_device_class(device), "sony/hotkey" );

	sony_nc_acpi_handle = device->handle;

	/* read device status */
	result = acpi_bus_get_status(device);
	/* bail IFF the above call was successful and the device is not present */
	if (!result && !device->status.present) {
		printk( KERN_NOTICE "[%s] Device not present\n", KBUILD_MODNAME );
		result = -ENODEV;
		goto outwalk;
	}
	
	result = sony_pf_add();
	if( result ) goto outpresent;
	
	status = acpi_walk_namespace( ACPI_TYPE_METHOD, sony_nc_acpi_handle, 1, sony_walk_callback, NULL, NULL, NULL );
	if (ACPI_FAILURE(status)) {
		pr_warn("unable to walk acpi resources\n");
		result = -ENODEV;
		goto outpresent;
	}
	
	//result = sony_laptop_setup_input( device );
	if( result ){
		pr_err("Unable to create input devices\n");
		goto outplatform;
	}
	
	if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
		int arg = 1;
		if( sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL) ) printk( KERN_ERR "[%s] ECON Method failed\n", KBUILD_MODNAME );
	}
	
	if( acpi_has_method(sony_nc_acpi_handle, "SN00") ){
		printk( KERN_NOTICE "[%s] Doing SNC setup\n", KBUILD_MODNAME );
		/* retrieve the available handles */
		result = sony_nc_handles_setup( sony_pf_device );
		if( !result ) sony_nc_function_setup( device, sony_pf_device );
	}
	
	if (acpi_video_get_backlight_type() == acpi_backlight_vendor) sony_nc_backlight_setup();
	
	/* create sony_pf sysfs attributes related to the SNC device */
	for ( item = sony_nc_values; item->name; ++item ) {
		
		if ( item->debug ) continue;
		
		/* find the available acpiget as described in the DSDT */
		for ( ; item->acpiget && *item->acpiget; ++item->acpiget ){
			if ( acpi_has_method(sony_nc_acpi_handle, *item->acpiget) ) {
				printk( KERN_NOTICE "[%s] Found %s getter: %s\n", KBUILD_MODNAME, item->name, *item->acpiget );
				item->devattr.attr.mode |= S_IRUGO;
				break;
			}
		}
		
		/* find the available acpiset as described in the DSDT */
		for( ; item->acpiset && *item->acpiset; ++item->acpiset ){
			if( acpi_has_method(sony_nc_acpi_handle, *item->acpiset) ) {
				printk( KERN_NOTICE "[%s] Found %s setter: %s\n", KBUILD_MODNAME, item->name, *item->acpiset );
				item->devattr.attr.mode |= S_IWUSR;
				break;
			}
		}
		
		if( item->devattr.attr.mode != 0 ){
			result = device_create_file( &sony_pf_device->dev, &item->devattr );
			if( result ) goto out_sysfs;
		}
	}
	
	pr_info( "[%s] SNC setup done.\n", KBUILD_MODNAME );
	return 0;
	
out_sysfs:
	for (item = sony_nc_values; item->name; ++item) {
		device_remove_file(&sony_pf_device->dev, &item->devattr);
	}
	sony_nc_backlight_cleanup();
	sony_nc_function_cleanup(sony_pf_device);
	sony_nc_handles_cleanup(sony_pf_device);
	
outplatform:
	//sony_laptop_remove_input();
	
outpresent:
	sony_pf_remove();
	
outwalk:
	sony_nc_rfkill_cleanup();
	return result;
}

static int sony_nc_remove( struct acpi_device* device ){
	struct sony_nc_value *item;
	sony_nc_backlight_cleanup();
	sony_nc_acpi_device = NULL;
	
	for (item = sony_nc_values; item->name; ++item) {
		device_remove_file(&sony_pf_device->dev, &item->devattr);
	}
	
	sony_nc_function_cleanup(sony_pf_device);
	sony_nc_handles_cleanup(sony_pf_device);
	sony_pf_remove();
	//sony_laptop_remove_input();
	printk( KERN_NOTICE "[%s] "SONY_NC_DRIVER_NAME " removed.\n", KBUILD_MODNAME );
	
	return 0;
}


/***************************
*          EVENTS          *
***************************/

//New SNC-only Vaios event mapping to driver known keys

static int sony_nc_hotkeys_decode(u32 event, unsigned int handle) {
	int ret = -EINVAL;
	unsigned int result = 0;
	struct sony_nc_event *key_event;
	
	printk( KERN_WARNING "[%s]FIXME: key events in not implemented.\n", KBUILD_MODNAME );

	if(sony_call_snc_handle(handle, 0x200, &result) ){
		printk( KERN_WARNING "[%s] Unable to decode event 0x%.2x 0x%.2x\n", KBUILD_MODNAME, handle, event );
		return -EINVAL;
	}
	
	result &= 0xFF;
	
	if (handle == 0x0100) key_event = sony_100_events;
	else key_event = sony_127_events;
	
	for (; key_event->data; key_event++) {
		if (key_event->data == result) {
			ret = key_event->event;
			break;
		}
	}
	
	if (!key_event->data) pr_info("Unknown hotkey 0x%.2x/0x%.2x (handle 0x%.2x)\n",	event, result, handle);
	
	return ret;
}



enum event_types {
	HOTKEY = 1,
	KILLSWITCH,
	GFX_SWITCH
};

static void sony_nc_notify( struct acpi_device* device, u32 event ){
	u32 real_ev = event;
	u8 ev_type = 0;
	int ret;

	printk( KERN_NOTICE "[%s] %s event: 0x%.2x\n", KBUILD_MODNAME, __FUNCTION__, event );

	if (event >= 0x90) {
		unsigned int result = 0;
		unsigned int arg = 0;
		unsigned int handle = 0;
		unsigned int offset = event - 0x90;

		if (offset >= ARRAY_SIZE(handles->cap)) {
			pr_err("Event 0x%x outside of capabilities list\n", event );
			return;
		}
		handle = handles->cap[offset];

		/* list of handles known for generating events */
		switch (handle) {
		/* hotkey event */
		case 0x0100:
		case 0x0127:
			ev_type = HOTKEY;
			ret = sony_nc_hotkeys_decode(event, handle);

			if (ret > 0) {
				//sony_laptop_report_input_event( ret );
				real_ev = ret;
			}

			break;

		/* wlan switch */
		case 0x0124:
		case 0x0135:
			/* events on this handle are reported when the
			 * switch changes position or for battery
			 * events. We'll notify both of them but only
			 * update the rfkill device status when the
			 * switch is moved.
			 */
			ev_type = KILLSWITCH;
			sony_call_snc_handle(handle, 0x0100, &result);
			real_ev = result & 0x03;

			/* hw switch event */
			if (real_ev == 1) sony_nc_rfkill_update();

			break;

		case 0x0128:
		case 0x0146:
			/* Hybrid GFX switching */
			sony_call_snc_handle(handle, 0x0000, &result);
			printk( KERN_NOTICE "[%s] GFX switch event received (reason: %s)\n",
				KBUILD_MODNAME,
				(result == 0x1) ? "switch change" :
				(result == 0x2) ? "output switch" :
				(result == 0x3) ? "output switch" :
				""
			);

			ev_type = GFX_SWITCH;
			real_ev = __sony_nc_gfx_switch_status_get();
			break;

		case 0x015B:
			/* Hybrid GFX switching SVS151290S */
			ev_type = GFX_SWITCH;
			real_ev = __sony_nc_gfx_switch_status_get();
			break;
		default:
			printk( KERN_WARNING "[%s] Unknown event 0x%x for handle 0x%x\n", KBUILD_MODNAME, event, handle );
			break;
		}

		/* clear the event (and the event reason when present) */
		arg = 1 << offset;
		sony_nc_int_call(sony_nc_acpi_handle, "SN05", &arg, &result);

	} else {
		/* old style event */
		ev_type = HOTKEY;
		//sony_laptop_report_input_event( real_ev );
	}
	acpi_bus_generate_netlink_event(sony_nc_acpi_device->pnp.device_class,
			dev_name(&sony_nc_acpi_device->dev), ev_type, real_ev);
}


#ifdef CONFIG_PM_SLEEP
static void sony_nc_function_resume(void){
	unsigned int i, result, bitmask, arg;
	
	printk( KERN_NOTICE "[%s] Resuming SNC device\n", KBUILD_MODNAME );
	
	for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
		unsigned int handle = handles->cap[i];
		
		if (!handle) continue;
		
		switch (handle) {
			case 0x0100:
			case 0x0101:
			case 0x0127:
				/* re-enable hotkeys */
				sony_call_snc_handle(handle, 0, &result);
				break;
			case 0x0102:
				/* re-enable hotkeys */
				sony_call_snc_handle(handle, 0x100, &result);
				break;
			case 0x0122:
				sony_nc_thermal_resume();
				break;
			case 0x0124:
			case 0x0135:
				sony_nc_rfkill_update();
				break;
			default:
				continue;
		}
	}
	
	/* Enable all events */
	arg = 0x10;
	if( !sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask) )
		sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask, &result );
}

static int sony_nc_resume( struct device* dev ){
	struct sony_nc_value *item;
	
	for (item = sony_nc_values; item->name; item++) {
		int ret;

		if (!item->valid) continue;
		ret = sony_nc_int_call( sony_nc_acpi_handle, *item->acpiset, &item->value, NULL );
		if (ret < 0) {
			pr_err("%s: %d\n", __func__, ret);
			break;
		}
	}
	
	if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
		int arg = 1;
		if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
			printk( KERN_WARNING "[%s] ECON Method failed\n", KBUILD_MODNAME );
	}

	if (acpi_has_method(sony_nc_acpi_handle, "SN00")) sony_nc_function_resume();
	return 0;
}
#endif


/********************
*    MODULE INIT    *
********************/


static int __init onLoad( void ){
	
	int result = 0;
	
	printk( KERN_NOTICE "%s is here.\n", KBUILD_MODNAME );
	
	if( !dmi_check_system( sonypi_dmi_table ) ){
		printk( KERN_NOTICE "[%s] Compatable hardware not found.\n", KBUILD_MODNAME );
		return -ENODEV;
	}
	
	result = acpi_bus_register_driver( &sony_nc_driver );
	if( result ) printk( KERN_ERR "[%s] Unable to register SNC driver\n", KBUILD_MODNAME );
	
	return result;
}

static void __exit onUnload( void ){
	acpi_bus_unregister_driver( &sony_nc_driver );
	printk( KERN_NOTICE "%s has been unloaded.\n", KBUILD_MODNAME );
}

module_init( onLoad );
module_exit( onUnload );
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE( acpi, sony_nc_device_ids );
